Update setup.py to require whitenoise 5.3.0
Update setup.py to require whitenoise 5.3.0

As per Whitenoise changelog (http://whitenoise.evans.io/en/stable/changelog.html) no breaking changes prevent updating the dependency. It would be great to prevent pip from fussing about installing a whitenoise version newer than 5.0.1
metakermit/django-spa,metakermit/django-spa